minikube should not create profile if driver is not usable

[medyagh]

Here on windows I tried to start minikbue with virtualbox then it rightfully told me I need to enable somethign in my bios
then I wanted to try a different driver (hyperv)
but minbikube already created an abondoned profiile.

it would be nice to minikube to try to delete the profile if the driver is not useable (like virtualbox is not installed or ...) or for any fatal reason. if this is the first time they create this profile

PS C:\Users\medya\workspsace\minikube> .\out\minikube.exe start --vm-driver=virtualbox
* minikube v1.7.3 on Microsoft Windows 10 Enterprise 10.0.18362 Build 18362
* Using the virtualbox driver based on user configuration
* Downloading VM boot image ...
* Creating virtualbox VM (CPUs=2, Memory=2000MB, Disk=20000MB) ...
* Downloading preloaded images tarball for k8s v1.17.3 ...
    > preloaded-images-k8s-v1-v1.17.3-docker-overlay2.tar.lz4: 137.58 MiB / 499*
X Unable to start VM. Please investigate and run 'minikube delete' if possible
* Error: [VBOX_VTX_DISABLED] creating host: create: precreate: This computer doesn't have VT-X/AMD-v enabled. Enabling it in the BIOS is mandatory
* Suggestion: Virtualization support is disabled on your computer. If you are running minikube within a VM, try '--driver=none'. Otherwise, consult your systems BIOS manual for how to enable virtualization.
* Related issues:
  - https://github.com/kubernetes/minikube/issues/3900
  - https://github.com/kubernetes/minikube/issues/4730
PS C:\Users\medya\workspsace\minikube> .\out\minikube.exe profile list
|----------|------------|---------|----|------|---------|--------|
| Profile  | VM Driver  | Runtime | IP | Port | Version | Status |
|----------|------------|---------|----|------|---------|--------|
| minikube | virtualbox | docker  |    | 8443 | v1.17.3 |        |
|----------|------------|---------|----|------|---------|--------|

[loftkun]

/assign

[loftkun]

I'll make the following changes:

1. add the error handlings in startNode() of cmd/minikube/cmd/start.go.
2. delete profile when failed to startNode().

  // add the error handlings. return err when failed to start.
  kubeconfig, err := startNode(existing, mc, n)
  if err != nil {
+  	  deleteProfile(profile) // delete profile
  	  exit.WithError("Starting node", err)
  }

[loftkun]

This issue seems to be dealed with in #7345.
can this issue be closed ?